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Brown Butter Rice Cereal Marshmallow Cookies

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A playful mashup of toasted brown butter, crispy rice cereal, and mini marshmallows, creating tender cookies with crispy edges.

  • Author: daniel-kim
  • Prep Time: 20 minutes
  • Cook Time: 15 minutes
  • Total Time: 95 minutes
  • Yield: 24 cookies 1x
  • Category: Desserts
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1 cup unsalted butter, cut into 16 pieces
  • 2 and 1/4 cups all-purpose flour
  • 2 teaspoons cornstarch
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 2 cups crispy rice cereal
  • 1 cup mini marshmallows
  • 3/4 cup packed light or dark brown sugar
  • 1/2 cup granulated sugar
  • 1 large egg, at room temperature
  • 1 large egg yolk, at room temperature
  • 2 teaspoons pure vanilla extract
  • Optional: flaky sea salt, for topping

Instructions

  1. Brown the butter. In a light-colored skillet over medium heat, melt the butter while stirring constantly until browned and nutty.
  2. Whisk dry ingredients. In a large bowl, whisk together flour, cornstarch, baking soda, and salt.
  3. Fold in cereal and marshmallows. Add crispy rice cereal and mini marshmallows, folding gently.
  4. Combine wet ingredients. Whisk cooled brown butter with brown sugar, granulated sugar, egg, egg yolk, and vanilla until smooth.
  5. Make the dough. Add wet mixture to dry ingredients and stir until a sticky dough forms.
  6. Form the cookies. Scoop about 2 tablespoons of dough, roll into balls, and freeze for 1 hour.
  7. Preheat and prepare pans. Set the oven to 350°F (177°C) and line baking sheets with parchment paper.
  8. Bake. Place frozen dough balls on baking sheets and bake for 14 to 15 minutes, until lightly browned.
  9. Finish and cool. If desired, sprinkle with flaky sea salt, cool on the baking sheet for 10 minutes before transferring to a cooling rack.

Notes

Let browned butter cool slightly before mixing with eggs to avoid scrambling. Use light-colored pans for consistency.

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